id:A059717 - OEIS Search Results

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Start with decimal expansion of n; if all digits have the same parity, stop; otherwise write down the number formed by the even digits and the number formed by the odd digits and add them; repeat.

+0
3

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 11, 3, 13, 5, 15, 7, 17, 9, 19, 20, 3, 22, 5, 24, 7, 26, 9, 28, 11, 3, 31, 5, 33, 7, 35, 9, 37, 11, 39, 40, 5, 42, 7, 44, 9, 46, 11, 48, 13, 5, 51, 7, 53, 9, 55, 11, 57, 13, 59, 60, 7, 62, 9, 64, 11, 66, 13, 68, 15, 7, 71, 9, 73, 11, 75 (list; graph; listen)

	OFFSET	`0,3`
	EXAMPLE	`For example, 59708 -> (0)8 + 597 = 605 -> 60 + 5 = 65 -> 6 + 5 = 11, stop, so a(59708) = 11.`
	CROSSREFS	`Cf. A059707, A059708.` `Sequence in context: A084051 A055483 A069652 this_sequence A004185 A068636 A004719` `Adjacent sequences: A059714 A059715 A059716 this_sequence A059718 A059719 A059720`
	KEYWORD	`nonn,base,easy,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Feb 08 2001`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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